[UN Secretary-General Ban Ki-moon pose with Turkish Cypriot leader Akinci and Cypriot President Anastasiades during the Cyprus reunification talks in the Swiss mountain resort of Mont Pelerin]By Tom Miles MONT PELERIN, Switzerland (Reuters) - A deal to reunite the divided island of Cyprus is within reach, United Nations Secretary-General Ban Ki-moon said on Monday as he opened a round of talks in a snow-bound hotel overlooking Lake Geneva in Switzerland. The five days of U.N.-led negotiations between Greek Cypriot President Nicos Anastasiades and his Turkish Cypriot counterpart Mustafa Akinci will concentrate on the question of territory "as well as all other outstanding issues interdependently", Ban said. "The prospect of a solution in Cyprus is within their reach.